Ammonia gas purification device based on offshore energy comprehensive utilization platform

Abstract

The invention discloses an ammonia gas purification device based on an offshore energy comprehensive utilization platform, and belongs to the technical field of ammonia gas purification, the ammonia gas purification device comprises a shell, a gas inlet chamber, a cooling chamber, a separation chamber and a gas outlet chamber are sequentially arranged in the shell in a communicating manner, a mixed gas inlet pipe is arranged on one side of the gas inlet chamber, and a mixed gas outlet pipe is arranged on the other side of the gas outlet chamber; a cavity adjusting part is movably arranged between the air inlet cavity and the air outlet cavity, the cavity adjusting part can move between the air inlet cavity and the air outlet cavity, and when the cavity adjusting part moves from the air outlet cavity to the air inlet cavity, the cavity adjusting part can move between the air inlet cavity and the air outlet cavity. Mixed gas can be pressed into the cooling chamber, separated gas can be sucked into the gas outlet chamber from the separation chamber, the gas inlet chamber or the gas outlet chamber can be circularly extruded, ammonia cooling liquid is converted into liquid ammonia through the cooling device to be collected, potential safety hazards caused by flammability of hydrogen are avoided, and the safety performance of the device is improved. And through skillfully designed structures such as a sealing door and a lifting plate, the stable operation of the device in a high-pressure environment is ensured, and the overall safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ammonia purification, and in particular to an ammonia purification device based on an offshore energy comprehensive utilization platform. Background Art

[0002] Many industrial applications (such as synthetic fertilizers, pharmaceutical industry, etc.) require high-purity ammonia as raw material. The offshore energy comprehensive utilization platform can produce ammonia through chemical methods and then purify the ammonia to obtain high-purity ammonia that meets the high standards of related industries.

[0003] In conventional technology, the production of ammonia using hydrogen and nitrogen requires a reaction in the presence of a high temperature and high pressure catalyst. At the same time, since the reaction is a reversible reaction, the generated ammonia is also an unstable gas. Therefore, the ammonia produced by the reaction of hydrogen and nitrogen is not of high purity, which is not conducive to subsequent utilization. The generated ammonia mixed gas needs to be purified.

[0004] Conventional ammonia purification devices, such as application number: 2020204325431, named: An electronic grade ammonia evaporation purification device, the technical scheme adopts the method of stirring and heating ammonia to collect high-purity ammonia, but this scheme cannot be used to purify a mixed gas of ammonia, hydrogen and nitrogen, because hydrogen is flammable and not very safe.

[0005] For example, the application number is: 2016212035769, and the patent name is: A device for purifying ammonia based on expansion refrigeration. This technical solution is mainly aimed at industrial recovery of ammonia to purify and produce high-purity ammonia. The waste gas components it treats are complex and contain solid waste, and the device has a complex structure and is not suitable for the purification process of ammonia synthesized from hydrogen and nitrogen. Therefore, for the above reaction process, it is necessary to design a method that is easy to purify ammonia mixed with nitrogen and hydrogen. Summary of the invention

[0006] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide an ammonia purification device based on an offshore energy comprehensive utilization platform to address the shortcomings of the prior art, so as to solve the problems that the existing purification device has a complex structure, redundant purification steps, low purification efficiency, and is not suitable for purifying a mixed gas composed of nitrogen, hydrogen and ammonia.

[0007] An ammonia purification device based on an offshore energy comprehensive utilization platform comprises a shell, wherein an air inlet chamber, a cooling chamber, a separation chamber and an air outlet chamber are sequentially connected and arranged inside the shell, a mixed gas inlet pipe is arranged on one side of the air inlet chamber, a cavity adjustment member is movably arranged between the air inlet chamber and the air outlet chamber, and the cavity adjustment member can move mutually between the air inlet chamber and the air outlet chamber, and when the cavity adjustment member moves from the air outlet chamber to the air inlet chamber, the mixed gas can be pressed into the cooling chamber and the separated gas can be sucked from the separation chamber into the air outlet chamber, so as to realize cyclic squeezing of the air inlet chamber or the air outlet chamber;

[0008] The lower end of the cooling chamber is communicated with the air inlet chamber, and the upper end of the cooling chamber is communicated with the separation chamber. A cooling component is arranged inside the cooling chamber, and the cooling component includes a spiral member, a center member, a connecting pipe and a circulation pipeline constituting a circulation loop. The spiral member is in a spiral structure from bottom to top and surrounds the center member. The upper end of the spiral member is communicated with the circulation pipeline, the lower end of the spiral member is communicated with the connecting pipe, the upper end of the connecting pipe is communicated with the center member, and the lower end of the center member is communicated with the circulation pipeline. The connecting pipes are arranged between the spiral members at intervals. The mixed gas enters from the lower end of the spiral member and rises along the spiral member to the No. 2 opening at the upper end of the cooling chamber. A circulating coolant is arranged in the spiral member, and the coolant flows along the spiral member from top to bottom.

[0009] A gas separation component is provided at the connection between the separation chamber and the cooling chamber, a partition plate is provided inside the separation chamber, the gas separation component includes a plurality of gas separation membranes, the plurality of gas separation membranes are arranged in a chessboard shape, one side of the partition plate is connected to the top of the gas separation component close to the side of the partition plate, the partition plate separates the nitrogen outlet channel and the hydrogen outlet channel of the separation chamber through the gas separation component, and the hydrogen outlet channel and the nitrogen outlet channel are respectively connected to the gas outlet chamber through two connecting ports;

[0010] A lifting block is arranged inside the air outlet chamber. When the top or bottom of the lifting block contacts the top or bottom of the inner cavity of the air outlet chamber, the connecting port connecting one of the air outlet chambers with the separation chamber can be blocked. A nitrogen pipe and a hydrogen pipe are arranged inside the lifting block. A No. 5 opening for the nitrogen pipe and the hydrogen pipe to move up and down and a sealing block for sealing the No. 5 opening are provided on the side of the air outlet chamber away from the separation chamber. One end of the nitrogen pipe and the hydrogen pipe both pass through the sealing block. When the cavity adjusting part moves up and down, the lifting block can change the pressure on the upper and lower sides of the lifting block in the air outlet chamber with the cavity adjusting part, so that the pressure increase or negative pressure phenomenon occurs alternately on the upper and lower sides of the lifting block in the air outlet chamber. The high pressure can make the nitrogen pipe or the hydrogen pipe be connected with the air outlet chamber located at the top or bottom chamber of the lifting block, and the negative pressure can make the gas in the hydrogen channel or the nitrogen channel enter the air outlet chamber through one of the connecting ports.

[0011] Furthermore, a resistance component and a sealing door are provided inside the air intake chamber. The sealing door can move upward after the cavity adjusting member rises a certain distance. The resistance component is used to increase the resistance of the sealing door to move upward.

[0012] Furthermore, the cavity adjustment member includes a lifting plate and an elastic member No. 1, the two ends of the elastic member No. 1 respectively abut against the top of the inner cavity of the air inlet chamber and the top of the lifting plate, the top of the lifting plate is connected to a connecting rod, the elastic member No. 1 is sleeved on the connecting rod, the top of the connecting rod extends from the top of the air inlet chamber and is connected to the bottom of the lifting block in the air outlet chamber.

[0013] Furthermore, the resistance assembly includes a mounting shell and a resistance block, the resistance block is mounted in the mounting shell, and a No. 2 elastic member is arranged between the resistance block and the inner cavity of the mounting shell, the resistance block is provided with No. 2 inclined surfaces on both upper and lower sides of the section extending from the mounting shell, a No. 1 inclined surface is arranged on the side of the top section of the sealing door, a limiting rod is vertically arranged inside the air intake chamber, the sealing door is sleeved on the limiting rod, the lifting plate is sleeved on the limiting rod through a No. 3 sealing member, a No. 3 elastic member is sleeved on the limiting rod, and two ends of the No. 3 elastic member respectively resist the top of the inner cavity of the air intake chamber and the top of the sealing door.

[0014] Furthermore, a No. 1 seal is arranged around the lifting plate, a protrusion is arranged on one side of the No. 1 seal, a height block is arranged on the protrusion, a No. 1 groove is arranged on one side of the inner cavity of the air intake chamber, an No. 1 opening connected to the cooling chamber is opened at the bottom of the right side of the No. 1 groove, and a sealing door is arranged in the No. 1 groove, and the sealing door is F-shaped.

[0015] Furthermore, the elastic force exerted on the sealing door by the No. 3 elastic member is greater than the friction force between the No. 1 sealing member and the sealing door.

[0016] Furthermore, the circulation pipeline comprises a cold fluid inlet pipe and a cold fluid outlet pipe, the top of the spiral member is laterally connected to the cold fluid inlet pipe, and the bottom of the central member is connected to the cold fluid outlet pipe.

[0017] Furthermore, an annular liquid ammonia discharge groove is formed between the bottommost disk of the spiral element and the inner wall of the cooling chamber.

[0018] Furthermore, sealing springs are provided in the nitrogen outlet groove and the hydrogen outlet groove, and No. 4 elastic parts are provided between the two sealing springs and the nitrogen outlet groove and the hydrogen outlet groove.

[0019] Furthermore, a nitrogen pipe and a hydrogen pipe are sleeved on the lifting block, one end of the nitrogen pipe and the hydrogen pipe are respectively connected to the nitrogen outlet groove and the hydrogen outlet groove, the nitrogen pipe and the hydrogen pipe are fixedly sleeved on the sealing block, a sliding groove is opened on the top left side of the shell, the sealing block is slidably set in the sliding groove, and the right side of the sealing block is elastic.

[0020] Beneficial effects of the present invention:

[0021] The ammonia purification device of the present invention utilizes the condensation physical properties of nitrogen, hydrogen and ammonia, cools and liquefies ammonia into liquid ammonia through a cooling device for collection, and ensures stable operation of the device under high pressure environment by designing a sealing door and a lifting plate structure, thereby improving overall safety. The device reduces energy consumption through an efficient cooling and heat exchange system, while avoiding waste heat and pollutant emissions that may be generated in traditional methods;

[0022] The ammonia purification device of the present invention separates nitrogen and hydrogen through a gas separation component, and generates negative pressure by the up and down movement of the lifting block, thereby increasing the gas collection rate and the separation rate of the gas separation component. The separated gas can be recycled, further increasing the utilization rate of the gas and reducing resource loss.

[0023] In the ammonia purification device of the present invention, the cooling component adopts a spiral channel design and is vertically connected through a connecting pipe, which increases the contact area between the mixed gas and the cooling fluid, thereby improving the heat exchange efficiency, which helps to quickly reduce the temperature of the mixed gas and promote the liquefaction of ammonia;

[0024] The ammonia purification device of the present invention utilizes the linkage adjustment mechanism of the lifting plate and the No. 1 elastic member. As the mixed gas is continuously injected into the air intake chamber, the internal pressure gradually increases. At this time, the lifting plate can be flexibly and stably moved up under the elastic force of the No. 1 elastic member, ensuring that when the No. 1 opening is ready to discharge the gas, the internal gas has accumulated sufficient pressure, thereby being able to more effectively push the gas through the cooling chamber for cooling treatment and promoting the smooth progress of subsequent purification steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a cross-sectional view of an ammonia purification device;

[0026] Figure 2 for Figure 1 Schematic diagram of the shell structure;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the hollow cavity adjusting member in the second state;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the hollow cavity adjusting member in the third state;

[0029] Figure 5 for Figure 1 A schematic diagram of the structure of the hollow cavity adjusting member in the fourth state;

[0030] Figure 6 for Figure 1 A schematic diagram of the structure of the hollow cavity adjusting member in the fifth state;

[0031] Figure 7 for Figure 1 Schematic diagram of the connection structure between the hollow cavity adjustment member and the lifting block;

[0032] Figure 8 is a cross-sectional view of a conflicting component;

[0033] Fig. 9 This is a schematic diagram of the sealing door structure in the ammonia purification device;

[0034] Fig.10 for Figure 3 Enlarged view of point A in the middle;

[0035] Fig.11 This is a schematic diagram of the structure of the lifting block cut at another angle;

[0036] Fig.12 It is a schematic diagram of the cooling component structure;

[0037] Fig.13 Schematic diagram of the gas separation component structure.

[0038] In the figure: 10, shell; 101, air inlet chamber; 1011, mixed gas inlet pipe; 1012, No. 2 seal; 1013, No. 1 groove; 1014, limit rod; 1015, No. 3 elastic member; 1016, No. 1 opening; 102, cooling chamber; 1021, No. 2 opening; 1022, liquid ammonia discharge groove; 103, separation chamber; 1031, No. 3 connecting port; 1032, hydrogen channel; 1033, nitrogen channel; 1034, No. 4 connecting port; 104, air outlet chamber; 1041, No. 5 opening; 105, slide; 210, lifting plate; 2101, protrusion; 2102, No. 3 seal; 211, No. 1 seal; 212, height block; 2 20. Elastic part No. 1; 230. Connecting rod; 240. Sealing door; 2401. Inclined surface No. 1; 250. Resistance assembly; 251. Mounting shell; 252. Resistance block; 2521. Inclined surface No. 2; 253. Elastic part No. 2; 310. Spiral part; 3101. Spiral channel; 320. Center piece; 330. Disc; 340. Connecting pipe; 350. Cold fluid inlet pipe; 360. Cold fluid outlet pipe; 40. Gas separation assembly; 410. Gas separation membrane; 510. Lifting block; 5101. Nitrogen outlet slot; 5102. Hydrogen outlet slot; 511. Sealing spring; 520. Elastic part No. 4; 530. Nitrogen pipe; 540. Hydrogen pipe; 550. Sealing block. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] See also Figure 1-13 The present invention provides an ammonia purification device based on an offshore energy comprehensive utilization platform, comprising a shell 10, wherein an air inlet chamber 101, a cooling chamber 102, a separation chamber 103 and an air outlet chamber 104 are sequentially connected inside the shell 10, the air outlet chamber 104 and the air inlet chamber 101 are arranged up and down, the separation chamber 103 and the cooling chamber 102 are arranged up and down, and the air outlet chamber 104, the air inlet chamber 101 and the separation chamber 103, the cooling chamber 102 are arranged left and right; it can save occupied space.

[0042] A mixed gas intake pipe 1011 is provided on one side of the air intake chamber 101, and a cavity adjusting member is provided in the air intake chamber 101. The cavity adjusting member includes a lifting plate 210 and an elastic member No. 1 220. The two ends of the elastic member No. 1 220 respectively abut against the top of the inner cavity of the air intake chamber 101 and the top of the lifting plate 210. A plurality of elastic members No. 1 220 can be provided. A sealing member No. 1 211 is provided around the lifting plate 210. The sealing member No. 1 211 has the effect of sealing the gap between the lifting plate 210 and the inner wall of the air intake chamber 101.

[0043] The top of the lifting plate 210 is connected to a connecting rod 230, and the No. 1 elastic member 220 is sleeved on the connecting rod 230. The top of the connecting rod 230 extends from the top of the air inlet chamber 101 and is connected to the bottom of the lifting block 510 in the air outlet chamber 104. The top of the air inlet chamber 101 is sleeved on the connecting rod 230 through the No. 2 sealing member 1012 to prevent gas leakage from between the air inlet chamber 101 and the connecting rod 230.

[0044] A protrusion 2101 is provided on the right side of the No. 1 seal 211, and a height block 212 is provided on the protrusion 2101. A No. 1 groove 1013 is provided on the right side of the inner cavity of the air intake chamber 101, and a No. 1 opening 1016 connected to the cooling chamber 102 is provided at the right bottom of the No. 1 groove 1013. A sealing door 240 is provided in the No. 1 groove 1013. The sealing door 240 is F-shaped, and a No. 1 inclined surface 2401 is provided at the top corner of the sealing door 240. The protrusion 2101 abuts against the sealing door 240, and an abutment assembly 250 is provided inside the air intake chamber 101.

[0045] The resistance assembly 250 includes a mounting shell 251 and a resistance block 252. The resistance block 252 is mounted in the mounting shell 251, and a second elastic member 253 is disposed between the resistance block 252 and the inner cavity of the mounting shell 251. The resistance block 252 extends from the mounting shell 251 and is provided with second inclined surfaces 2521 on both upper and lower sides.

[0046] The height of the height block 212 is higher than the height of the mounting case 251 .

[0047] A limiting rod 1014 is vertically arranged inside the air intake chamber 101, the sealing door 240 is sleeved on the limiting rod 1014, the lifting plate 210 is sleeved on the limiting rod 1014 through the No. 3 sealing member 2102, and a No. 3 elastic member 1015 is sleeved on the limiting rod 1014, and the two ends of the No. 3 elastic member 1015 respectively abut against the top of the inner cavity of the air intake chamber 101 and the top of the sealing door 240.

[0048] The mixed gas is injected through the mixed gas inlet pipe 1011. At this time, the sealing door 240 seals and blocks the No. 1 opening 1016. As the mixed gas is continuously injected into the inlet chamber 101, the internal pressure continues to increase. The elastic force of the No. 3 elastic member 1015 on the sealing door 240 is greater than the friction between the No. 1 sealing member 211 and the sealing door 240. The sealing door 240 can no longer move up with the lifting plate 210 under the action of the friction force, so that the lifting plate 210 rises to the position as shown in FIG. Figure 3 The mixed gas is continuously injected into the air inlet chamber 101, at which time the top of the height block 212 abuts against the bottom of the top horizontal plate of the sealing door 240, as Figure 4 As shown; the mixed gas is continuously injected into the air inlet chamber 101, and the internal pressure continues to increase. Due to the friction between the No. 1 slope 2401 and the No. 2 slope 2521, the lifting plate 210 is stagnant for a period of time and moves upward. When the pressure in the air inlet chamber 101 overcomes the friction between the No. 1 slope 2401 and the No. 2 slope 2521, the lifting plate 210 continues to move upward to drive the sealing door 240 to move upward. The sealing door 240 resists the resistance block 252 and shrinks into the mounting shell 251 until the top horizontal plate of the sealing door 240 passes the resistance block 252. At this time, the resistance block 252 returns to its original position under the action of the No. 2 elastic member 253. At this time, the sealing door 240 opens the No. 1 opening 1016, as shown in FIG. Figure 5 As shown, the valve on the mixed gas intake pipe 1011 is closed; as the mixed gas enters the cooling chamber 102 through the No. 1 opening 1016, the internal pressure of the intake chamber 101 gradually decreases, and the lifting plate 210 moves down on the No. 1 elastic member 220. At this time, the friction force between the No. 1 slope 2401 and the No. 2 slope 2521 is greater than the sum of the elastic force of the No. 3 elastic member 1015 and the friction force between the lifting plate 210 and the sealing door 240, so that the sealing door 240 will not be closed when the lifting plate 210 descends, and the lifting plate 210 descends to contact the top of the horizontal plate in the middle of the sealing door 240, as shown in FIG. Figure 6 As shown, at this time, the sum of the elastic force of the third elastic member 1015 and the elastic force of the first elastic member 220 on the sealing door 240 is greater than the friction force between the first slope 2401 and the second slope 2521, so that the resistance block 252 shrinks again, and the sealing door 240 returns to Figure 1 Position shown.

[0049] See also Figure 1 , Figure 2 and Fig.12A cooling component is arranged inside the cooling chamber 102, and the cooling component includes a spiral member 310, a center member 320, a connecting pipe 340, and a circulation pipeline. The center of the spiral member 310 is fixedly sleeved on the center member 320, and the spiral member 310 is a hollow structure. The spiral member 310 forms a spiral channel 3101 under the obstruction of the center member 320 and the inner wall of the cooling chamber 102. The connecting pipe 340 can connect the fluid at the bottom of the inner cavity of the spiral member 310 to the top of the inner cavity of the center member 320, and the connecting pipe 340 vertically passes through the spiral channel 3101, so that the mixed gas in the spiral channel 3101 can transfer heat through the connecting pipe 340. The circulation pipeline includes a cold fluid inlet pipe 350 and a cold fluid outlet pipe 360. The cold fluid inlet pipe 350 is horizontally arranged on the top of the spiral member 310, and the cold fluid outlet pipe 360 ​​is arranged at the bottom of the center member 320.

[0050] The bottom disk 330 of the spiral member 310 does not contact the inner wall of the cooling assembly, so that an annular liquid ammonia discharge groove 1022 is formed between the bottom disk 330 of the spiral member 310 and the inner wall of the cooling chamber 102 .

[0051] The cooling fluid enters the spiral element 310 through the cold fluid inlet pipe 350, and the cold fluid spirals downward along the spiral element 310 to the lowest point. Then, under the action of pressure, the cooling fluid flows upward through the connecting pipe 340 until it enters the center element 320. Then, under the action of gravity and pressure, the cooling fluid is discharged from the cold fluid outlet pipe 360 ​​for circulation; the valve at the opening of the liquid ammonia discharge groove 1022 is closed, and the mixed gas enters from the bottom spiral channel 3101 and flows upward along the spiral channel 3101. The mixed gas transfers heat to the cold fluid through the spiral element 310 and the connecting pipe 340 to cool it down. This method effectively increases the contact area between the mixed gas and the cold fluid and improves the cooling effect. At the same time, the formed liquid ammonia rolls under the slope of the spiral channel 3101 to the annular liquid ammonia discharge groove 1022 for collection.

[0052] See also Figure 1 , Figure 2 and Fig.13 The cooling chamber 102 is connected to the separation chamber 103 through the No. 2 opening 1021, and the mixed nitrogen and hydrogen enter the separation chamber 103 through the No. 2 opening 1021; a gas separation component 40 is provided at the No. 2 opening 1021, and the gas separation component 40 has a plurality of gas separation membranes 410 arranged in a chessboard shape, and a hydrogen channel 1032 and a nitrogen channel 1033 are provided inside the separation chamber 103, and the hydrogen channel 1032 and the nitrogen channel 1033 are respectively connected to the left side and the top of the gas separation component 40.

[0053] The mixed nitrogen and hydrogen pass through the gas separation assembly 40 to allow the hydrogen and nitrogen to enter the hydrogen channel 1032 and the nitrogen channel 1033 respectively.

[0054] See also Figure 1-7 , Fig.10 and Fig.11 The hydrogen channel 1032 and the nitrogen channel 1033 are connected to the gas outlet chamber 104 through the No. 3 connecting port 1031 and the No. 4 connecting port 1034 respectively. The lifting block 510 is sealed in contact with the inner wall of the gas outlet chamber 104 on all sides. The lifting block 510 is respectively provided with a nitrogen outlet groove 5101 and a hydrogen outlet groove 5102 on the upper and lower sides. The nitrogen outlet groove 5101 and the hydrogen outlet groove 5102 are both provided with sealing springs 511. A No. 4 elastic member 520 is provided between the two sealing springs 511 and the nitrogen outlet groove 5101 and the hydrogen outlet groove 5102. The two ends of the No. 4 elastic member 520 respectively contact the outlet groove and the sealing spring member 511. The lifting block 510 is sleeved with a nitrogen pipe 530 and a hydrogen pipe 540. The nitrogen pipe 530 and the hydrogen pipe 540 are both 'L' type, one end of the nitrogen pipe 530 and the hydrogen pipe 540 are connected to the nitrogen outlet groove 5101 and the hydrogen outlet groove 5102 respectively, the nitrogen pipe 530 and the hydrogen pipe 540 are fixedly sleeved on the sealing block 550, and the other ends of the nitrogen pipe 530 and the hydrogen pipe 540 are connected to different collectors through two stretchable hoses, the sealing block 550 is 'T' shaped, a slide groove 105 is provided on the top left side of the shell 10, the sealing block 550 is slidably set in the slide groove 105, and the right side of the sealing block 550 is elastic to achieve a sealing effect, the slide groove 105 is connected to the outlet chamber 104 through the No. 5 opening 1041, the No. 5 opening 1041 is used for the nitrogen pipe 530 and the hydrogen pipe 540 to move up and down, and the right side of the sealing block 550 blocks the No. 5 opening 1041 to make it sealed.

[0055] The working principle of the present invention is as follows:

[0056] First cycle: the mixed gas is injected through the mixed gas inlet pipe 1011. At this time, the sealing door 240 seals and blocks the No. 1 opening 1016. As the mixed gas is continuously injected into the inlet chamber 101, the internal pressure continues to increase, and the pressure pushes the lifting plate 210 to move upward. The lifting plate 210 drives the lifting block 510 to move upward through the connecting rod 230, so that the internal gas pressure of the gas outlet chamber 104 at the top of the lifting block 510 gradually increases. The gas pressure overcomes the elastic force of the No. 4 elastic member 520, causing the top sealing spring 511 to be concave and unable to block the notch of the nitrogen outlet groove 5101, and the gas is discharged from the bottom of the sealing spring 511. Fig.11 The nitrogen gas flows into the nitrogen outlet groove 5101 on both sides of the middle sealing spring 511, so that the air between the outlet chamber 104 and the top of the lifting block 510 is gradually discharged;

[0057] When the top of the height block 212 abuts against the bottom of the top horizontal plate of the sealing door 240, as shown in FIG. Figure 4As shown, the mixed gas is continuously injected into the air inlet chamber 101, and the internal pressure continues to increase. Due to the friction between the No. 1 slope 2401 and the No. 2 slope 2521, the lifting plate 210 is stagnant for a period of time and moves upward. When the pressure in the air inlet chamber 101 overcomes the friction between the No. 1 slope 2401 and the No. 2 slope 2521, the lifting plate 210 continues to move upward to drive the sealing door 240 and the lifting block 510 to move upward. The sealing door 240 resists the resistance block 252 and shrinks into the mounting shell 251 until the top horizontal plate of the sealing door 240 passes the resistance block 252. At this time, the resistance block 252 returns to its original position under the action of the No. 2 elastic member 253, and the sealing door 240 opens the No. 1 opening 1016. At the same time, all the gas in the air outlet chamber 104 located at the top of the lifting block 510 is discharged. At this time, the state is as follows: Figure 5 As shown;

[0058] Close the valve on the mixed gas inlet pipe 1011; as the mixed gas enters the cooling chamber 102 through the No. 1 opening 1016, close the valve at the opening of the liquid ammonia discharge groove 1022; the cooling fluid enters the spiral member 310 through the cold fluid inlet pipe 350, and the cold fluid spirals downward along the spiral member 310 to the lowest point, and then under the action of pressure, the cooling fluid flows upward through the connecting pipe 340 until it enters the center member 320, and then the cooling fluid is discharged from the cold fluid outlet pipe 360 ​​under the action of gravity and pressure for circulation; the mixed gas enters from the bottom spiral channel 3101, and flows upward along the spiral channel 3101, and the mixed gas transfers heat to the cold fluid through the spiral member 310 and the connecting pipe 340 for cooling. This method effectively increases the contact area between the mixed gas and the cold fluid, improves the cooling effect, and at the same time, the formed liquid ammonia rolls under the slope of the spiral channel 3101 to the annular liquid ammonia discharge groove 1022.

[0059] The mixed nitrogen and hydrogen pass through the gas separation assembly 40 to allow the hydrogen and nitrogen to enter the hydrogen channel 1032 and the nitrogen channel 1033 respectively.

[0060] The internal pressure of the air inlet chamber 101 gradually decreases, and the lifting plate 210 moves down on the No. 1 elastic member 220. At this time, the friction force between the No. 1 slope 2401 and the No. 2 slope 2521 is greater than the sum of the elastic force of the No. 3 elastic member 1015 and the friction force between the lifting plate 210 and the sealing door 240, so that the sealing door 240 will not be closed when the lifting plate 210 descends. The lifting plate 210 descends to contact the top of the horizontal plate in the middle of the sealing door 240, and the lifting block 510 descends to compress the gas between the bottom of the lifting block 510 and the outlet chamber 104, so that the bottom sealing spring sheet 511 opens the gas between the bottom of the lifting block 510 and the outlet chamber 104 and is discharged from the hydrogen outlet groove 5102;

[0061] In such Figure 6As shown, the sum of the elastic force of the third elastic member 1015 and the elastic force of the first elastic member 220 on the sealing door 240 is greater than the friction force between the first slope 2401 and the second slope 2521, so that the resistance block 252 shrinks again, and the sealing door 240 and the lifting block 510 return to Figure 1 Position shown.

[0062] The mixed gas inlet of the air inlet chamber 101 flows to the cooling chamber, and the air discharge operation of the air outlet chamber 104 is completed at the same time.

[0063] Second cycle: the mixed gas is injected into the mixed gas inlet pipe 1011 again, and when the lifting block 510 moves upward, negative pressure is generated at the bottom of the lifting block 510, so that the hydrogen in the hydrogen channel 1032 quickly enters the chamber surrounded by the bottom of the lifting block 510 and the gas outlet chamber 104;

[0064] When the mixed gas enters the cooling chamber 102, the lifting block 510 moves downward. At this time, negative pressure is generated at the top of the lifting block 510, allowing the nitrogen in the nitrogen channel 1033 to quickly enter the chamber surrounded by the top of the lifting block 510 and the gas outlet chamber 104. When the lifting block 510 descends, the sealing spring 511 at the bottom of the lifting block 510 opens under the action of pressure, allowing the hydrogen to be collected through the hydrogen pipe 540.

[0065] When the mixed gas is injected into the mixed gas inlet pipe 1011 next time, the sealing spring 511 at the top of the lifting block 510 opens under the action of pressure, so that the nitrogen gas is collected through the nitrogen pipe 540 .

[0066] The negative pressure is generated by the up and down movement of the lifting block 510 , thereby increasing the gas collection rate and the separation rate of the gas separation assembly 40 .

[0067] The second cycle is repeated N times until the purification process of the mixed gas is completed.

[0068] The above is only an embodiment of the present invention. Common knowledge such as the well-known characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical well-known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the present invention, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An ammonia purification device based on an offshore energy comprehensive utilization platform, characterized in that: The invention comprises a shell, wherein an air inlet chamber, a cooling chamber, a separation chamber and an air outlet chamber are sequentially connected inside the shell, a mixed gas inlet pipe is arranged on one side of the air inlet chamber, a cavity adjusting member is movably arranged between the air inlet chamber and the air outlet chamber, and the cavity adjusting member can move mutually between the air inlet chamber and the air outlet chamber, and when the cavity adjusting member moves from the air outlet chamber to the air inlet chamber, the mixed gas can be pressed into the cooling chamber and the separated gas can be sucked from the separation chamber into the air outlet chamber, so as to realize cyclic squeezing of the air inlet chamber or the air outlet chamber; The lower end of the cooling chamber is communicated with the air inlet chamber, and the upper end of the cooling chamber is communicated with the separation chamber. A cooling component is arranged inside the cooling chamber, and the cooling component includes a spiral member, a center member, a connecting pipe and a circulation pipeline constituting a circulation loop. The spiral member is in a spiral structure from bottom to top and surrounds the center member. The upper end of the spiral member is communicated with the circulation pipeline, the lower end of the spiral member is communicated with the connecting pipe, the upper end of the connecting pipe is communicated with the center member, and the lower end of the center member is communicated with the circulation pipeline. The connecting pipes are arranged between the spiral members at intervals. The mixed gas enters from the lower end of the spiral member and rises along the spiral member to the No. 2 opening at the upper end of the cooling chamber. A circulating coolant is arranged in the spiral member, and the coolant flows along the spiral member from top to bottom. A gas separation component is provided at the connection between the separation chamber and the cooling chamber, a partition plate is provided inside the separation chamber, the gas separation component includes a plurality of gas separation membranes, the plurality of gas separation membranes are arranged in a chessboard shape, one side of the partition plate is connected to the top of the gas separation component close to the side of the partition plate, the partition plate separates the nitrogen outlet channel and the hydrogen outlet channel of the separation chamber through the gas separation component, and the hydrogen outlet channel and the nitrogen outlet channel are respectively connected to the gas outlet chamber through two connecting ports; A lifting block is arranged inside the air outlet chamber. When the top or bottom of the lifting block contacts the top or bottom of the inner cavity of the air outlet chamber, the connecting port connecting one of the air outlet chambers with the separation chamber can be blocked. A nitrogen pipe and a hydrogen pipe are arranged inside the lifting block. A No. 5 opening for the nitrogen pipe and the hydrogen pipe to move up and down and a sealing block for sealing the No. 5 opening are provided on the side of the air outlet chamber away from the separation chamber. One end of the nitrogen pipe and the hydrogen pipe both pass through the sealing block. When the cavity adjusting part moves up and down, the lifting block can change the pressure on the upper and lower sides of the lifting block in the air outlet chamber with the cavity adjusting part, so that the pressure increase or negative pressure phenomenon occurs alternately on the upper and lower sides of the lifting block in the air outlet chamber. The high pressure can make the nitrogen pipe or the hydrogen pipe be connected with the air outlet chamber located at the top or bottom chamber of the lifting block, and the negative pressure can make the gas in the hydrogen channel or the nitrogen channel enter the air outlet chamber through one of the connecting ports.

2. The ammonia purification device based on an offshore energy comprehensive utilization platform according to claim 1, characterized in that: The air inlet chamber is provided with a resistance component and a sealing door. The sealing door can move upward along with the cavity adjusting member after it rises a certain distance. The resistance component is used to increase the resistance of the sealing door to move upward.

3. The ammonia purification device based on an offshore energy comprehensive utilization platform as claimed in claim 2, characterized in that: The cavity adjustment member includes a lifting plate and an elastic member No. 1, wherein the two ends of the elastic member No. 1 respectively abut against the top of the inner cavity of the air inlet chamber and the top of the lifting plate, and the top of the lifting plate is connected to a connecting rod, on which the elastic member No. 1 is sleeved, and the top of the connecting rod extends from the top of the air inlet chamber and is connected to the bottom of the lifting block in the air outlet chamber.

4. The ammonia purification device based on an offshore energy comprehensive utilization platform as claimed in claim 3, characterized in that: The resistance assembly includes a mounting shell and a resistance block, the resistance block is mounted in the mounting shell, and a No. 2 elastic member is arranged between the resistance block and the inner cavity of the mounting shell, No. 2 inclined surfaces are arranged on both upper and lower sides of the resistance block extending from the mounting shell, a No. 1 inclined surface is arranged on the side of the top section of the sealing door, a limiting rod is vertically arranged inside the air intake chamber, the sealing door is sleeved on the limiting rod, the lifting plate is sleeved on the limiting rod through a No. 3 sealing member, a No. 3 elastic member is sleeved on the limiting rod, and two ends of the No. 3 elastic member respectively resist the top of the inner cavity of the air intake chamber and the top of the sealing door.

5. The ammonia purification device based on an offshore energy comprehensive utilization platform according to claim 4, characterized in that: A No. 1 seal is arranged around the lifting plate, a protrusion is arranged on one side of the No. 1 seal, a height block is arranged on the protrusion, a No. 1 groove is arranged on one side of the inner cavity of the air intake chamber, an No. 1 opening connected to the cooling chamber is opened at the right bottom of the No. 1 groove, and a sealing door is arranged in the No. 1 groove, and the sealing door is F-shaped.

6. The ammonia purification device based on an offshore energy comprehensive utilization platform as claimed in claim 5, characterized in that: The elastic force exerted on the sealing door by the No. 3 elastic member is greater than the friction force between the No. 1 sealing member and the sealing door.

7. The ammonia purification device based on an offshore energy comprehensive utilization platform according to claim 1, characterized in that: The circulation pipeline comprises a cold fluid inlet pipe and a cold fluid outlet pipe, the top of the spiral member is laterally connected to the cold fluid inlet pipe, and the bottom of the central member is connected to the cold fluid outlet pipe.

8. The ammonia purification device based on an offshore energy comprehensive utilization platform according to claim 7, characterized in that: An annular liquid ammonia discharge groove is formed between the bottommost disk of the spiral element and the inner wall of the cooling chamber.

9. The ammonia purification device based on an offshore energy comprehensive utilization platform according to claim 1, characterized in that: Sealing springs are arranged in the nitrogen outlet groove and the hydrogen outlet groove, and No. 4 elastic parts are arranged between the two sealing springs and the nitrogen outlet groove and the hydrogen outlet groove.

10. The ammonia purification device based on an offshore energy comprehensive utilization platform according to claim 9, characterized in that: A nitrogen pipe and a hydrogen pipe are sleeved on the lifting block, one end of the nitrogen pipe and the hydrogen pipe are respectively connected to the nitrogen outlet groove and the hydrogen outlet groove, the nitrogen pipe and the hydrogen pipe are fixedly sleeved on the sealing block, a sliding groove is opened on the top left side of the shell, the sealing block is slidably set in the sliding groove, and the right side of the sealing block is elastic.

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